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AUNITED STATES PATENT OFFICE.

lFRANCIS W. MAXSTADT, OF ALBANY, NEW YORK, ASSIGNOR OF ONE-HALF TO BERNHARD NUSBAUM, OF SAME PLACE.

SIPHON.

SPECIFICATION forming part of Letters Patent No. 257,825, dated May e, 188e,

' ,y Application fune Aprn 15, Iseo. (No model.)

To all whom it may concern:

Be it known that I, FRANCIS W. MAxsTAD'I, ofthe city and county of Albany, and State of New York, have invented certain new-and useful Improvements in Siphous, of' which the following is a specification.

My invention relates to the construction of l siphons for drawing liquids; and it consists in combining with a tube a flexible bulb provided with induction and eduction valves for the purpose of adapting it to use for exhausting the air from the tube preparatory to putting the siphon in operation.l

My invention also consists in combining withthe eduction-valve a movable arm operated" by means of an external handle for the purpose of holding said valve in aelosed position to stop the ow of liquid at any time when necessary or desirable.

In the accompanying drawings, which form a part of this specification, and to which reference is herein made, Figure l is a longitudi` nal section of my improved si phon, showing the movable arm drawn back and away from the eduction-valve; and Fig. 2, a detached sectional view of the eduction-valve, with the movable arm moved up in' position for holding the valve closed.

As illustrated iu the drawings, A is the tube or" the siphon, which I preferably make ot' vulcanized rubber or other flexible material, as being best'adapted to general use; but when desired it may be made of metallic tubing bent in the usual siphon form. Said tube should be made of sufficient length to form the entire short leg and the greater part ofthe long leg ofthe siphon.

An elastic bulb, B, is attached to the tube A by the coupling C, which also forms a chamber and seat for the induction-valve D, that is arranged to open toward the bulb. At the opposite end of the bulb B another coupling, E, is attached, which forms a chamber and seat for the eduction-valve F, opening outward from the bulb.

An arm, G, secured to the rock-shaft g, running crosswise through the coupling E, is so arranged that the end of it can be turned up, as shown in Fig. 2, to bear against the under side of the 'valve'F and hold it firmly closed. A handle, H, is secured to the outer end of the rock-shaft g for operating the arm G.

The mode of operation is as follbws:- The open endl of the tubeA is immersed in the liquid to be dra-wn oft', leaving the bulb B outside of the vessel containing the liquid, with the outer end of the siphon sufficiently below the surface of the liquid to maintain a supremacy of gravity in favor of the liquid in that limb of the Siphon. VOn applying press ure to the bulb B to discharge the air therefrom the induction-valve D closes and prevents the air from the bulb from passing into the tube A, and at the same time the eductionvalve F opens to permit the air from the bulb to escape into the atmosphere. On releasing the pressure the bulb B expands by its resilienee, causing the eduction valve to close and the irnluction-valve to open, and the bulb to till with air from the tube A. As fast as the air is exhausted from the tube the atmospheric pressure on the liquid forces it (the liquid) up ,into the short leg of the siphom'and then, having once passed the highest point at the bend ofthe tube, the liquid will continue to tlow down through the outer leg of the siphon as long yas the lower end ot' that leg is below the surface ot' the supply. As both of the valves D. and F open downward they offer no obstruction to the free outflow of the liquid; but when it is necessary or desirable to stop the flow the arm G can be thrown up to hold the eduction-valve F closed, and by so doing the discharge may be suspended and restored at pleasure.

For convenience in filling bottles and other small-necked vessels, a tapering tube may be fitted to the outer end of the siphon.

What I claim as my invention, and desire t0 secure by- Letters Patent, is-

1. The combination of bulb B and tube A with induction-valve D, eduction-valve F, and a locking device which at will can be made to prevent said valve F from opening. Y

2. The combination, with (the tube A and elastic bulb B, ot' the induction-valve D, the eduction-.valve F, rock-shaft g, arm G, and means for operating said rock-shaft and arm tolock said eductionvalve, and thereby cut off the iow of liquid, 'substantially as set forth.

FRANCIS W. MAXSTADT. l

Witnessesa' WILLIAM H. Low, BERNHARD NUSBAUM.

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